Reference no: EM132851515

"Time-Weighted - Cumulative Sum Control Chart - 6".

1. What is the standardized value used for xi in the standardized cusum chart?

a) y_i=frac{x_i-μ_0}{3σ}

b) y_i=frac{x_i-μ_0}{σ}

c) y_i=frac{x_i-μ_0}{2σ}

d) y_i=frac{x_i-μ_0}{6σ}

2. What is the value of one sided upper cusum of the standardized cusum chart?

a) C_i^+=max?left{0,y_i-k+C_{i-1}^+right}

b) C_i^+=max?left{0,y_i+k+C_{i-1}^+right}

c) C_i^+=min?left{0,y_i+k+C_{i-1}^+right}

d) C_i^+=minleft{0,y_i-k+C_{i-1}^+right}

3. What is the value of the one-sided lower cusum of the standardized cusum chart?

a) C_i^+=max?left{0,-y_i-k+C_{i-1}^+right}

b) C_i^-=max?left{0,y_i-k+C_{i-1}^-right}

c) C_i^-=max?left{0,-y_i-k+C_{i-1}^-right}

d) C_i^+=max?left{0,-y_i-k+C_{i-1}^-right}

4. Which of these is an advantage of the standardized cusum chart?

a) There can be same means chosen for different processes

b) There can be same standard deviations chosen for different processes

c) The choices of k and h parameters are not scale dependent

d) No variability at all

5. Combined Cusum-Shewhart procedure is applied _____________

a) On-line control

b) On-line measure

c) Off-line control

d) On-line measure

6. To apply Shewhart-cusum combined procedure, the Shewhart control limits should be applied almost _________ standard deviation from the center.

a) 2

b) 1

c) 1.5

d) 3.5

7. What is the full form of FIR feature in the cusum charts?

a) First initial response

b) Fast initial response

c) First initiation response

d) Free initial response

8. What is the meaning of the 50% headstart?

a) The value of C0- equal to H/2

b) The value of C0+ equal to H/2

c) Both the values of C0+ and C0- equal to H/2

d) Both the values of C0+ and C0- lesser than H/2

9. What is the standardized variable value for the cusum charts from Hawkins?

a) v_i=frac{sqrt{|y_i|}-0.822}{0.349}

b) v_i=frac{sqrt{|y_i|}-0.822}{0.500}

c) v_i=frac{3sqrt{|y_i|}-0.822}{0.349}

d) v_i=frac{2sqrt{|y_i|}-0.822}{0.349}

10. The standardized variable vi was subjected to vary more with respect to ____________ than process mean.

a) Sample mean

b) Sample variance

c) Process variance

d) Process standard deviation